include shell.inc mov eax, GroupID ; property group identifier mov esi, OFFSET32 Callback ; address of callback procedure VxDcall SHELL_Unhook_Properties jc error
Removes the callback procedure from association with the given property group. Uses EAX, ECX, EDX, and Flags.
GroupID
Property group identifier. Can be NULL, a valid group ordinal such as GROUP_TASK (as defined in PIF.H), or the address of a null-terminated string specifying the name of a custom PIF group. If GroupID is NULL, the service checks all property groups and removes the callback procedure from each group it is associated with.
Callback
Address of the callback procedure. For more information about the procedure, see SHELL_Hook_Properties.